I like the Global Entry or TSA pre fee credit..
Changes will go into effect starting 6/1/2018:
NEW! 2 miles per $1 spent at restaurants✓
NEW! 2 miles per $1 spent on hotel accommodations when purchased directly with the hotel✓
NEW! 25% back as statement credit on purchases of food, beverages and Wi-Fi onboard United®-operated flights when you pay with your Explorer Card✓
NEW! Global Entry or TSA Pre✓® fee credit — up to $100 as a statement credit every 4 years as reimbursement for the application fee for either program when charged to your Card✓
The following benefit will no longer be available after 5/31/2018:
• Earn 10,000 bonus miles after you spend $25,000 on purchases each calendar year.
Since this benefit is being removed mid-year, you have the opportunity to earn 4,000 bonus miles if you spend $10,000-$24,999 on purchases that post to your account by 5/31/2018.
Your travel and purchase protection benefits are changing as follows:
• Trip Cancellation/Interruption Insurance is changing. You can be reimbursed for up to $1,500 per trip for your pre-paid, non-refundable passenger fares, if your trip is cancelled or cut short by sickness, severe weather and other covered situations.
• Price Protection and Return Protection will no longer be available.
You will continue to enjoy Extended Warranty Coverage, Purchase Protection, Auto Rental Collision Damage Waiver, Trip Delay Reimbursement and Lost Luggage Reimbursement.